| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| BARBAS PAUL M | Director | 6555 SIERRA DRIVE, IRVING | /s/ Daniela Gutierrez, as Attorney-in-Fact | 19 May 2025 | 0001176453 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | VST | Common Stock | Award | $0 | +1,163 | +2.3% | $0.000000 | 52,226 | 15 May 2025 | Direct |